CN115817039B - Gravure printing method based on flying ink inhibition - Google Patents
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Abstract
The invention discloses a gravure printing method based on flying ink inhibition, which comprises a printing detection system, wherein the printing detection system comprises a data presetting module, a detection execution module, a data analysis module and a scheme determination module, the data presetting module and the detection execution module are electrically connected with the data analysis module, the data analysis module is electrically connected with the scheme determination module, the data presetting module comprises a preliminary setting module and a starting module, the detection execution module comprises a color forming comparison module and a protruding judgment module, the data analysis module comprises a data judgment module and a quality analysis module, the scheme determination module comprises an operation judgment module and an adjustment module, the data presetting module is used for carrying out normal setting of a transmission speed and a drying temperature, and starting a detection procedure, and the detection execution module is used for detecting the final color depth and dislocation condition of an image.
Description
Technical Field
The invention relates to the technical field of printing, in particular to an intaglio printing method based on flying ink inhibition.
Background
Along with the continuous advancement of technology, the printing technology is improved, the flying ink inhibiting technology is well improved, gravure printing is used as one of printing technologies, the advantages of thick ink layer, bright color, high saturation, high printing plate printing resistance, stable printing quality, high printing speed and the like of a printed product are taken up in the fields of printing packaging and graphic publishing, the process of gravure printing is usually 'film unreeling, tension control, printing a first color, drying, overprinting a second color, drying, overprinting a third color, drying, overprinting a fourth color, drying, traction and reeling', before printing, a worker presets the drying temperature and the conveying speed at a control end according to the characteristics of printing ink and a substrate to be printed, in combination processing environment, the substrate cannot accurately know the conditions of affinity and dislocation between the printing ink, and if a good feeding effect cannot be realized between the substrate and the printing ink, and the quality of the printed product cannot be very high.
Meanwhile, under the condition of consistent pit depth, if the affinity between the printing ink and the base material is low and the dislocation is high, the finished product effect of gravure printing of the product is reduced, the dislocation degree can be reduced by adjusting the drying temperature, and the affinity degree can be improved by adjusting the conveying speed, but how to detect and improve the gravure printing ink becomes a problem to be solved urgently by the person in the field.
Disclosure of Invention
The invention aims to provide a gravure printing method based on flying ink inhibition, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the gravure printing method based on the flying ink inhibition comprises a printing detection system, wherein the printing detection system comprises a data presetting module, a detection execution module, a data analysis module and a scheme determination module, the data presetting module and the detection execution module are electrically connected with the data analysis module, and the data analysis module is electrically connected with the scheme determination module;
the data presetting module comprises a preliminary setting module and a starting module, the detection execution module comprises a color forming comparison module and a protruding judgment module, the data analysis module comprises a data judgment module and a quality analysis module, and the scheme determination module comprises an operation judgment module and an adjustment module.
The invention further describes that the data presetting module is used for carrying out normal setting of the transmission speed and the drying temperature, starting a detection procedure, the detection execution module is used for detecting the final color depth and the dislocation situation of an image, transmitting detection data to the data analysis module, judging the affinity degree and the dislocation situation between the printing ink and the substrate to be printed by the analysis module, carrying out quality class classification, and the scheme determining module is used for carrying out preset data adjustment according to the classification result, so that the quality of the finished product in the formal printing is improved.
The invention further describes the operation method of the printing detection system as follows:
s1: the staff first carries out a pre-printing preparation procedure, prepares a substrate to be printed, printing ink, a doctor blade, a guide roller, a compression roller and a printing roller according to the requirement of a construction sheet, adjusts the position distance and simultaneously adjusts a power system and an electric system;
s2: the upper plate is carried out, the good layout is protected from being bumped, meanwhile, the plate cylinder is fastened on the printing machine, the loosening of the plate cylinder during formal printing is prevented, after the running device is ready, the printing plate is carefully calibrated, the gauge is adjusted, and the pressure is corrected;
s3: the method comprises the steps that a worker inputs a normal conveying speed value and a normal drying temperature value in a preliminary setting module, a section of fixed length of initial printing of a substrate to be printed is set as a test run detection area, a detection execution module detects relevant data of overprinting conditions between printing ink of the test run part and the substrate, and a detection result is transmitted to a data analysis module;
s4: the data analysis module judges and analyzes the detection data, obtains the affinity data and the dislocation data, the scheme determination module formulates new operation data according to the obtained data, the adjustment module adjusts the printing data according to the preset data, and the printing process is formally started after the processing data is adjusted;
s5: the test run detection zone is marked for excision thereof.
The invention further describes the specific steps of the S3 as follows:
s31: according to the ink characteristics and the substrate characteristics, a normal conveying speed value V is obtained Often times And a normal drying temperature value T Often times Setting the length of the detection area according to the size of the printed image;
s32: when test run detection is carried out, the base material is brushed for four times respectively, and dried after each time of brushing, a color forming comparison module obtains the last color forming image on the base material, and color depth comparison is carried out between the last color forming image and the sample color forming image, so that the color depth obtaining degree is obtained;
s33: the convex judging module performs convex point scanning on the side surface of the substrate after the first and last overprinting and drying, when the printing ink does not reach the drying effect, the printing ink is easy to misplace during transmission, and when the intaglio printing of the image is performed, the misplacement effect degree of the printing ink can be obtained through the overprinting length of the convex part;
s34: the data analysis module is used for collecting the chromaticity acquisition degree and the printing ink dislocation effect degree.
The invention further describes the specific content of the data detection of the color forming comparison module as follows:
a1: inputting a sample graph in a color forming comparison module in advance, determining the color depth of a sample as a final value of the color depth of '1', determining the primary color of a base material when not printed as a primary value of the color depth of '0', filtering the color depth from the primary value to the final value layer by layer to obtain a plurality of sample depths with different degrees, obtaining corresponding color depth values, and establishing a color depth library;
a2: the color forming comparison module obtains an image after the last drying process is completed, compares the image with the depth in the color depth library, and obtains a final printing color depth value, wherein the final printing color depth value is defined as the color depth acquisition degree, and is recorded as S, and 0<S is less than or equal to 1.
The invention further describes the specific content of the data detection of the protrusion judgment module as follows:
b1: the total length of the salient points of the input side image in the protrusion judging module when overprinting is free from dislocation is recorded as n;
b2: the protrusion judging module acquires the width di of the lateral salient points actually collected during the first overprinting;
b3: the width of the lateral salient point actually collected by the protrusion judging module when the last overprinting is obtained is D i ；
B4: the protrusion judging module calculates the dislocation effect degree after the first and the last overprinting drying according to the obtained data, and marks the dislocation effect degree as Z after the first drying 1 Error after last dryingBit effect degree is recorded as Z 2 ；
B5: the Z is 1 And Z 2 The calculation formula of (2) is as follows:
that is, the smaller the Z value is, the lower the dislocation degree is, m is the total number of overprinting convex points on the side surface, i is the number of m, and Z 1 ≥1，Z 2 And setting the maximum value of the dislocation effect degree to be 1.5, and if the obtained Z value is larger than 1.5, recognizing that the dislocation degree cannot be reduced by temperature adjustment only.
The invention further describes that the judging standard of the data judging module is set as follows:
setting the minimum value of the acquisition degree of the color depth to be 90%, if 0< S <90%, directly identifying the unqualified affinity between the printing ink and the base material, and if 90% or more and 100% or less, combining the dislocation effect degree to carry out discussion, judging how to adjust the preset value at the present stage, thereby improving the printing quality of the finished product;
the data judging module acquires Z 1 And Z 2 Then, the quotient is used to make a comparison of two values, which is marked as k, andwhen Z is 1 And Z 2 Under the condition that the content of k is less than or equal to 85% and less than or equal to 100%, the dislocation degree between the printing inks is reduced in the subsequent drying process, and the content of k is less than or equal to 50%<85% indicates that the subsequent drying does not improve the drying effect of the ink, resulting in a greater degree of misalignment, and when k=50%, indicates that the image after the last overprinting does not overlap with the image after the first overprinting at all, being the minimum value of k.
The invention further describes that the affinity degree and dislocation degree of the mass analysis module in the S4 to the substrate and the ink are judged as follows:
at 0<S<90%, or if any misalignment degree is greater than 1.5, is directly determined at V Often times And T Often times Under the condition that the affinity degree between the printing ink and the base material is low, or the drying effect is low, the dislocation degree is serious, the printing quality is low, if the required printing effect cannot be achieved only by adjusting the conveying speed and the drying temperature, and the quality is judged to be 0 grade;
when S is more than or equal to 90% and less than or equal to 100% and k is more than or equal to 50% and less than 85%, the subsequent drying process has a certain dislocation improvement effect on the drying of the printing ink, but a great improvement space is provided, the affinity degree is qualified, and the grade I quality degree is judged;
when S is more than or equal to 90% and less than or equal to 100% and k is more than or equal to 85% and less than or equal to 100%, the subsequent drying process has a great drying effect on the printing ink, the caused dislocation degree is also very low, the affinity degree is qualified, and the grade II quality degree is judged.
The invention further describes that the scheme determination content of the operation judgment module is as follows:
when the quality degree is 0 level, the staff directly adjusts the transmission speed to the lowest, the temperature after overprinting is adjusted to the maximum value, and then S3-S4 are repeated until the quality degree is I level or above, and then the following adjustment procedure is carried out;
when the quality degree is I level, the conveying speed is related to S, the conveying speed is reduced by 5m/min every 1% when the difference between S and 100% is equal, a new conveying speed value is obtained, the drying temperature is increased, the drying temperature is related to k, the drying temperature is compared with 85% when the difference between K and 85% is equal, and the drying temperature is increased by 1 ℃ every 1% to obtain a new drying temperature;
when the quality degree is level II, the transmission speed is adjusted in the above way, a new transmission speed value is obtained, the drying temperature is related to k, and the drying temperature is increased by 1 ℃ every 5% when the k is compared with 100%, so as to obtain a new drying temperature;
by adjusting the conveying speed and the drying temperature, the printing quality of the base material is effectively improved.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, a printing detection system is adopted, quality detection is carried out within a certain distance during printing, a quality result is obtained, the dislocation degree can be reduced by adjusting the drying temperature, the affinity degree can be improved by adjusting the conveying speed, and further the quality of a finished product during formal printing is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the process of the present invention;
fig. 2 is a schematic diagram of the system of the present invention.
Detailed Description
The technical scheme of the present invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides the following technical solutions: the gravure printing method based on the flying ink inhibition comprises a printing detection system, wherein the printing detection system comprises a data presetting module, a detection execution module, a data analysis module and a scheme determination module, the data presetting module and the detection execution module are electrically connected with the data analysis module, and the data analysis module is electrically connected with the scheme determination module;
the data presetting module comprises a preliminary setting module and a starting module, the detection execution module comprises a color forming comparison module and a protrusion judgment module, the data analysis module comprises a data judgment module and a quality analysis module, and the scheme determination module comprises an operation judgment module and an adjustment module.
The data presetting module is used for carrying out normal setting of the transmission speed and the drying temperature, starting a detection procedure, detecting the final color depth and the dislocation situation of the image by the detection execution module, transmitting detection data to the data analysis module, judging the affinity degree and the dislocation situation between the printing ink and the substrate to be printed by the analysis module, classifying the quality grades, and carrying out preset data adjustment by the scheme determining module according to the classification result, so that the quality of the finished product in the formal printing process is improved.
The operation method of the printing detection system is as follows:
s1: the staff first carries out a pre-printing preparation procedure, prepares a substrate to be printed, printing ink, a doctor blade, a guide roller, a compression roller and a printing roller according to the requirement of a construction sheet, adjusts the position distance and simultaneously adjusts a power system and an electric system;
s2: the upper plate is carried out, the good layout is protected from being bumped, meanwhile, the plate cylinder is fastened on the printing machine, the loosening of the plate cylinder during formal printing is prevented, after the running device is ready, the printing plate is carefully calibrated, the gauge is adjusted, and the pressure is corrected;
s3: the method comprises the steps that a worker inputs a normal conveying speed value and a normal drying temperature value in a preliminary setting module, a section of fixed length of initial printing of a substrate to be printed is set as a test run detection area, a detection execution module detects relevant data of overprinting conditions between printing ink of the test run part and the substrate, and a detection result is transmitted to a data analysis module;
s4: the data analysis module judges and analyzes the detection data, obtains the affinity data and the dislocation data, the scheme determination module formulates new operation data according to the obtained data, the adjustment module adjusts the printing data according to the preset data, and the printing process is formally started after the processing data is adjusted;
s5: the test run detection zone is marked for excision thereof.
The specific steps of S3 are as follows:
s31: according to the ink characteristics and the substrate characteristics, a normal conveying speed value V is obtained Often times And a normal drying temperature value T Often times Setting the length of the detection area according to the size of the printed image;
s32: when test run detection is carried out, the base material is brushed for four times respectively, and dried after each time of brushing, a color forming comparison module obtains the last color forming image on the base material, and color depth comparison is carried out between the last color forming image and the sample color forming image, so that the color depth obtaining degree is obtained;
s33: the convex judging module performs convex point scanning on the side surface of the substrate after the first and last overprinting and drying, when the printing ink does not reach the drying effect, the printing ink is easy to misplace during transmission, and when the intaglio printing of the image is performed, the misplacement effect degree of the printing ink can be obtained through the overprinting length of the convex part;
s34: the data analysis module is used for collecting the chromaticity acquisition degree and the printing ink dislocation effect degree.
The specific content of the data detection of the color forming comparison module is as follows:
a1: inputting a sample graph in a color forming comparison module in advance, determining the color depth of a sample as a final value of the color depth of '1', determining the primary color of a base material when not printed as a primary value of the color depth of '0', filtering the color depth from the primary value to the final value layer by layer to obtain a plurality of sample depths with different degrees, obtaining corresponding color depth values, and establishing a color depth library;
a2: the color forming comparison module obtains an image after the last drying process is completed, compares the image with the depth in the color depth library, and obtains a final printing color depth value, wherein the final printing color depth value is defined as the color depth acquisition degree, and is recorded as S, and 0<S is less than or equal to 1.
The specific content of the data detection of the protrusion judgment module is as follows:
b1: the total length of the salient points of the input side image in the protrusion judging module when overprinting is free from dislocation is recorded as n;
b2: the width of the lateral salient point actually collected when the projection judging module acquires the first overprinting is d i ；
B3: the width of the lateral salient point actually collected by the protrusion judging module when the last overprinting is obtained is D i ；
B4: the protrusion judging module calculates the dislocation effect degree after the first and the last overprinting drying according to the obtained data, and marks the dislocation effect degree as Z after the first drying 1 The dislocation effect after the last drying is marked as Z 2 ；
B5：Z 1 And Z 2 The calculation formula of (2) is as follows:
that is, the smaller the Z value is, the lower the dislocation degree is, m is the total number of overprinting convex points on the side surface, i is the number of m, and Z 1 ≥1，Z 2 And setting the maximum value of the dislocation effect degree to be 1.5, and if the obtained Z value is larger than 1.5, recognizing that the dislocation degree cannot be reduced by temperature adjustment only.
The judgment standard of the data judgment module is set as follows:
setting the minimum value of the acquisition degree of the color depth to be 90%, if 0< S <90%, directly identifying the unqualified affinity between the printing ink and the base material, and if 90% or more and 100% or less, combining the dislocation effect degree to carry out discussion, judging how to adjust the preset value at the present stage, thereby improving the printing quality of the finished product;
the data judging module acquires Z 1 And Z 2 Then, the quotient is used to make a comparison of two values, which is marked as k, andwhen Z is 1 And Z 2 Under the condition that the content of k is less than or equal to 85% and less than or equal to 100%, the dislocation degree between the printing inks is reduced in the subsequent drying process, and the content of k is less than or equal to 50%<85% indicates that the subsequent drying does not improve the drying effect of the ink, resulting in a greater degree of misalignment, and when k=50%, indicates that the image after the last overprinting does not overlap with the image after the first overprinting at all, being the minimum value of k.
And S4, judging the affinity degree and dislocation degree of the mass analysis module between the substrate and the ink as follows:
at 0<S<90%, or storeIn the case where any degree of misalignment is greater than 1.5, it is directly recognized that the ratio is V Often times And T Often times Under the condition that the affinity degree between the printing ink and the base material is low, or the drying effect is low, the dislocation degree is serious, the printing quality is low, if the required printing effect cannot be achieved only by adjusting the conveying speed and the drying temperature, and the quality is judged to be 0 grade;
when S is more than or equal to 90% and less than or equal to 100% and k is more than or equal to 50% and less than 85%, the subsequent drying process has a certain dislocation improvement effect on the drying of the printing ink, but a great improvement space is provided, the affinity degree is qualified, and the grade I quality degree is judged;
when S is more than or equal to 90% and less than or equal to 100% and k is more than or equal to 85% and less than or equal to 100%, the subsequent drying process has a great drying effect on the printing ink, the caused dislocation degree is also very low, the affinity degree is qualified, and the grade II quality degree is judged.
The scheme determination content of the operation judgment module is as follows:
when the quality degree is 0 level, the staff directly adjusts the transmission speed to the lowest, the temperature after overprinting is adjusted to the maximum value, and then S3-S4 are repeated until the quality degree is I level or above, and then the following adjustment procedure is carried out;
when the quality degree is I level, the conveying speed is related to S, the conveying speed is reduced by 5m/min every 1% when the difference between S and 100% is equal, a new conveying speed value is obtained, the drying temperature is increased, the drying temperature is related to k, the drying temperature is compared with 85% when the difference between K and 85% is equal, and the drying temperature is increased by 1 ℃ every 1% to obtain a new drying temperature;
when the quality degree is level II, the transmission speed is adjusted in the above way, a new transmission speed value is obtained, the drying temperature is related to k, and the drying temperature is increased by 1 ℃ every 5% when the k is compared with 100%, so as to obtain a new drying temperature;
by adjusting the conveying speed and the drying temperature, the printing quality of the base material is effectively improved.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The gravure printing method based on the flying ink inhibition comprises a printing detection system and is characterized in that: the printing detection system comprises a data preset module, a detection execution module, a data analysis module and a scheme determination module, wherein the data preset module and the detection execution module are electrically connected with the data analysis module, and the data analysis module is electrically connected with the scheme determination module;
the data presetting module comprises a preliminary setting module and a starting module, the detection execution module comprises a color forming comparison module and a protrusion judgment module, the data analysis module comprises a data judgment module and a quality analysis module, and the scheme determination module comprises an operation judgment module and an adjustment module;
the operation method of the printing detection system is as follows:
s1: the staff first carries out a pre-printing preparation procedure, prepares a substrate to be printed, printing ink, a doctor blade, a guide roller, a compression roller and a printing roller according to the requirement of a construction sheet, adjusts the position distance and simultaneously adjusts a power system and an electric system;
s2: the upper plate is carried out, the good layout is protected from being bumped, meanwhile, the plate cylinder is fastened on the printing machine, the loosening of the plate cylinder during formal printing is prevented, after the running device is ready, the printing plate is carefully calibrated, the gauge is adjusted, and the pressure is corrected;
s3: the method comprises the steps that a worker inputs a normal conveying speed value and a normal drying temperature value in a preliminary setting module, a section of fixed length of initial printing of a substrate to be printed is set as a test run detection area, a detection execution module detects relevant data of overprinting conditions between printing ink of the test run part and the substrate, and a detection result is transmitted to a data analysis module;
s4: the data analysis module judges and analyzes the detection data, obtains the affinity data and the dislocation data, the scheme determination module formulates new operation data according to the obtained data, the adjustment module adjusts the printing data according to the preset data, and the printing process is formally started after the processing data is adjusted;
s5: marking the test run detection zone so as to cut off the test run detection zone;
the specific steps of the S3 are as follows:
s31: according to the ink characteristics and the substrate characteristics, a normal conveying speed value V is obtained Often times And a normal drying temperature value T Often times Setting the length of the detection area according to the size of the printed image;
s32: when test run detection is carried out, the base material is brushed for four times respectively, and dried after each time of brushing, a color forming comparison module obtains the last color forming image on the base material, and color depth comparison is carried out between the last color forming image and the sample color forming image, so that the color depth obtaining degree is obtained;
s33: the convex judging module performs convex point scanning on the side surface of the substrate after the first and last overprinting and drying, when the printing ink does not reach the drying effect, the printing ink is easy to misplace during transmission, and when the intaglio printing of the image is performed, the misplacement effect degree of the printing ink can be obtained through the overprinting length of the convex part;
s34: the data analysis module is used for collecting the chromaticity acquisition degree and the printing ink dislocation effect degree;
the specific content of the data detection of the color forming comparison module is as follows:
a1: inputting a sample graph in a color forming comparison module in advance, determining the color depth of a sample as a final value of the color depth of '1', determining the primary color of a base material when not printed as a primary value of the color depth of '0', filtering the color depth from the primary value to the final value layer by layer to obtain a plurality of sample depths with different degrees, obtaining corresponding color depth values, and establishing a color depth library;
a2: the color forming comparison module acquires an image after the last drying process is completed, compares the image with the depth in the color depth library to obtain a final printing color depth value, and defines the final printing color depth value as the color depth acquisition degree, and is recorded as S, wherein 0<S is less than or equal to 1;
the specific content of the data detection of the protrusion judgment module is as follows:
b1: the total length of the salient points of the input side image in the protrusion judging module when overprinting is free from dislocation is recorded as n;
b2: the width of the lateral salient point actually collected when the projection judging module acquires the first overprinting is d i ；
B3: the width of the lateral salient point actually collected by the protrusion judging module when the last overprinting is obtained is D i ；
B4: the protrusion judging module calculates the dislocation effect degree after the first and the last overprinting drying according to the obtained data, and marks the dislocation effect degree as Z after the first drying 1 The dislocation effect after the last drying is marked as Z 2 ；
B5: the Z is 1 And Z 2 The calculation formula of (2) is as follows:
that is, the smaller the Z value is, the lower the dislocation degree is, m is the total number of overprinting convex points on the side surface, i is the number of m, and Z 1 ≥1，Z 2 And setting the maximum value of the dislocation effect degree to be 1.5, and if the obtained Z value is larger than 1.5, recognizing that the dislocation degree cannot be reduced by temperature adjustment only.
2. The gravure printing method based on the flying ink suppression according to claim 1, characterized in that: the data presetting module is used for carrying out normal setting of the transmission speed and the drying temperature, and starting a detection procedure, the detection execution module is used for detecting the final color depth and the dislocation condition of an image, and transmitting detection data to the data analysis module, the analysis module is used for judging the affinity degree and the dislocation condition between the printing ink and the substrate to be printed and carrying out quality class classification, and the scheme determining module is used for carrying out preset data adjustment according to the classification result, so that the quality of a finished product in formal printing is improved.
3. The gravure printing method based on the flying ink suppression according to claim 2, characterized in that: the judgment standard of the data judgment module is set as follows:
setting the minimum value of the acquisition degree of the color depth to be 90%, if 0< S <90%, directly identifying the unqualified affinity between the printing ink and the base material, and if 90% or more and 100% or less, combining the dislocation effect degree to carry out discussion, judging how to adjust the preset value at the present stage, thereby improving the printing quality of the finished product;
the data judging module acquires Z 1 And Z 2 Then, the quotient is used to make a comparison of two values, which is marked as k, andwhen Z is 1 And Z 2 Under the condition that the content of k is less than or equal to 85% and less than or equal to 100%, the dislocation degree between the printing inks is reduced in the subsequent drying process, and the content of k is less than or equal to 50%<85% indicates that the subsequent drying does not improve the drying effect of the ink, resulting in a greater degree of misalignment, and when k=50%, indicates that the image after the last overprinting does not overlap with the image after the first overprinting at all, being the minimum value of k.
4. A gravure printing method based on the inhibition of flying ink according to claim 3, characterized in that: the affinity degree and dislocation degree of the mass analysis module in the S4 for the base material and the printing ink are judged as follows:
at 0<S<90%, or if any misalignment degree is greater than 1.5, is directly determined at V Often times And T Often times Under the condition that the affinity degree between the printing ink and the base material is low, or the drying effect is low, the dislocation degree is serious, the printing quality is low, if the required printing effect cannot be achieved only by adjusting the conveying speed and the drying temperature, and the quality is judged to be 0 grade;
when S is more than or equal to 90% and less than or equal to 100% and k is more than or equal to 50% and less than 85%, the subsequent drying process has a certain dislocation improvement effect on the drying of the printing ink, but a great improvement space is provided, the affinity degree is qualified, and the grade I quality degree is judged;
when S is more than or equal to 90% and less than or equal to 100% and k is more than or equal to 85% and less than or equal to 100%, the subsequent drying process has a great drying effect on the printing ink, the caused dislocation degree is also very low, the affinity degree is qualified, and the grade II quality degree is judged.
5. The gravure printing method based on the flying ink suppression according to claim 4, wherein: the scheme determination content of the operation judgment module is as follows:
when the quality degree is 0 level, the staff directly adjusts the transmission speed to the lowest, the temperature after overprinting is adjusted to the maximum value, and then S3-S4 are repeated until the quality degree is I level or above, and then the following adjustment procedure is carried out;
when the quality degree is I level, the conveying speed is related to S, the conveying speed is reduced by 5m/min every 1% when the difference between S and 100% is equal, a new conveying speed value is obtained, the drying temperature is increased, the drying temperature is related to k, the drying temperature is compared with 85% when the difference between K and 85% is equal, and the drying temperature is increased by 1 ℃ every 1% to obtain a new drying temperature;
when the quality degree is level II, the transmission speed is adjusted in the above way, a new transmission speed value is obtained, the drying temperature is related to k, and the drying temperature is increased by 1 ℃ every 5% when the k is compared with 100%, so as to obtain a new drying temperature;
by adjusting the conveying speed and the drying temperature, the printing quality of the base material is effectively improved.
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